Excavator.



E. D. GALLEN.

EXCAVATOR.

` APPucATloN rxLED AuG.13. 1911.

Patented Nov. 2?, 1917.

2 SHEETS-SHEET 2' 'inventor Witnesses Attorneys :l-GALLEN', 0FGREENVILLE, MIIISSIISSIUPPJI.

EXCAVATOR'.

Specification of Letters Patent.

Patented `Nov. Wl, 1631*?.

Application tiled August 13, 1917. Serial No. lt.

To all 'whom it may comer/a: Y

Be it known that I, EDWARD lD. GALLEN, a citizen of the United States,residing at Greenville, in the county of Washington and State ofMississippi, have invented a new and useful Excavator, of which thefollowing is a specification.

This invention relates `to excavators of the scraper type, one of itsobjects being to provide a machine of this character which can beoperated by means of an ordinary stationary engine and by a singleperson, means being provided whereby, when the machine is moved in onedirection over the ground to be excavated, the parts will becomeautomatically set so that, upon the return movement of the machine, theshovel thereof will dig into and remove a portion of the soil and conveyit to the point of discharge, means being employed for automaticallyejecting the dirt from the shovel after the same has been conveyed to adesired point.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of theinvention.

Tn the accompanying drawings: the preferred form of the invention hasbeen shown.

lln said drawings Figure 1 is a plan view of the machine.

Fig. 2 is a side elevation thereof..

Fig. 3 is a section on line 3-3 Fig. 2.

Fig. 4 is a longitudinal sectionothrough the machine.

Fig. 5 is a section on line 5-5 Fig. 2.

Fig. 6 is a diagrammatical view of the complete apparatus.

Referring to the figures by characters of reference 1 designates themain frame of the machine, the same being supported, at one end, by asingle wheel 2 while its other4 end is supported by wheels 3 mounted forrotation upon the end portions of an angular axle 4. This axle isslidably mounted within slots 5 formed in bearing plates 6 attached tothe sides of the frame l, said slots being inclined upwardly toward thefront end of the machine, as shown in lBig. 2. A cross bar 7 is securedupon the frame 1 in advance of the axle- 4 and is provided, upon themiddle portion thereof, with a bracket 8 carrying spaced sheaves 9.

lorwardly converging strips 10 are secured to the axle 4 at pointsbetween the sides of the frame 1 and these strips merge into a guidetongue 11 which is slidably mounted within an opening 12 formed with--in a guide plate 13 secured to the front end of the frame 1 at thecenter thereof. This tongue thus operates to prevent the axle fromshifting ylaterally relative to the frame 1, it being understood thatthe end portions of the axle are provided with shoulders 14 adapted toslide along the inner faces of the slotted plates 6, as shownparticularly in Fi 5. langers 15 are connected to the sides of y tivetothe main frame.

The links 17 are pivotally connected, at their upper ends, to bars 19which are arranged between the sides of the frame and are pivotallymounted, at their Vrear ends, upon a shaft 20 adapted to slide withinslots 21 formed within supporting plates 22. These plates are attachedto the side of the main frame 1. Longitudinal slots 23 are formed withinthe bars 19 and each of these slots receives one end portion of a bar 24adapted to slide therein. An arm 25 extends downwardly and forwardlyfrom the middle portion of this bar and is pivotally connected, as at26, to the middle portion of an ejecting plate 27 which is slidablymounted'on the bottom of the shovel 16.

Sheaves 28 are connected to the rear end portions of the strips 10 andcables 29 extend partly around these sheaves and are fastened, at oneend, to the bar 24, while their other ends extend through openings 30 inthe rear end portion of the frame 1. The

'alti titl cables 29 are secured together at a lpoint 1 of the machineand from sheave 32 the said return cable 31 extends longitudinally abovethe frame 1 and thrcu h bracket 8 and over one of the sheaves 9. aidreturn cable then extends throughout the path of movement of the machineand is attached to a drum X adapted to be ,I rotated by a suitableengine Y.

Sheaves 33 are secured to the sides of frame 1 adjacent the bar 7 andadditional sheaves 34 are secured to the sides of the shovel 16 near thefront end ofthe shovel. Cables 35 are fastened at one end to the axle 4close to the wheels 2 and these cables extend over the sheaves 33 andthence down- I of the cable31.

y a person traveling with the apparatus can A steerin Antiffrictionrollers 37 are carried byv the upper end portions of the links 17 andare adapted, under certain conditions, to travel under the cross bar 7.

A sheave 38 is mounted within a bracket 39 connected to the rear endportion of the frame 1 and a cable 40 is mounted on this sheave 38 andis attached, at one end, to the cross bar 24. This cable extendsforwardly from sheave 38 through the bracket 8 and over one of thesheaves 9 to a oint where it can be conveniently reached or the'purposehereinafter set forth.

For the purpose of iding the apparatus, the wheel 2 may e provided witha stem 41 having a'worm gear 42. This gear is engaged by a worm 43 atone end of a rod 44. A hand wheel 45 is provided or actuating thismechanism so that hold' it readily in its course. v

Under normal conditions the bar 24-is seated within the rear 'ends ofthe slots 23, the shaft 20 is seated in the rear ends of the slots 21',plate 27 is located within the rear end of the shovel 16, and theanti-friction rollers 37 are located back of the cross bar 7. Bywindingcable 31 and successively holding and paying out cable 36, the cables 29will be caused to pull bar 24 forwardly within the slots'23, thussliding the scraper plate 27 forwardly within the shovel 16 resting onthe ground and ejecting any dirt which may have been accumulated withinthe shovel. During the completion of this forward movement of bar 24,the same pushes against. the front end walls of the upper inclined wallsof the slots 5, thus causing the main frame 1 to be elevated so as tolift the shovel oif of the ound. Further windingof the cable 31 willmovey the machine bodily toward the sheave 32 located at one end of thepath of movement of the machine. When the machine has traveled a desireddistance toward the sheave 32, the winding of cable 3l is discontinuedand cable 36 is then taken up While cable 31 is permitted to becomeslack. When cables 36 and 35 become taut, they first pull the axle 4forwardly within the slots 5, thus permitting the main frame 1 togravitate downwardly so as to bring the front edge of the shovel intocontact with the ground. Continued pulling of the cables 35 and 36 Willmove the machine forwardly away from the sheave 32 and toward the otherlimit of the path of movement of the machine. As the machine is thus.drawn forwardly, the shovel digs into the soil and as the soilaccumulates within the shovel, it pushes the ejecting plate 27backwardly. The shovel cannot ride over the ground during this forwardmovement because the links 17 are preventedl from moving up wardly bythe cross bar 7 under which theJ 'rollers 37 are arranged. As the shovelbecomes filled during the forward movement of the machine, bar 24 movesagainst the rear end walls of the slots 23 and thus shifts the bars 19longitudinally so as to move the rollers 37 from under the cross bar 7.Shovel 10 is thus unlocked. After the dirt has been conveyed to thepoint of discharge, the winding of cable 36 is stopped and held, saidcable is. permitted to become slack. Cable 31 is then wound so as tostart the machine in the reverse direction. During the `first portion ofthe winding operation, cable 3,1 will cause the plate 27 to moveforwardly within the shovel 16 which is held back by cable 36 and thuseject the contents of the shovel after which the parts will become resetand by releasing drum Z and cable 36 can be moved toward the sheave 32as hereinbefore described.

It will be apparent that by using a machine such as has been described,one person, operating the drivin engine, can control lthe entireoperation o the excavator simply by starting and stopping the windingdrum so as tomove the machine in the proper direction.

By providing the cable 40, the operator can pull the bar 24 rearwardlyshould the parts become caught from, any cause and i, ,aca

not operate as smoothly as desired. This manual actuation of the partswill not often be necessary andusually only occurs when some of theparts become clogged.

It is to be understood that if desired the wheels on the apparatus dcanbe replaced with runners to be drawn over the ground.

What is claimed is 1. An excavator including a shovel, actuatmg meansfor moving the same backwardly, and means operated by said actuatingmeans for successively ejecting the contents of the shovel, elevatingthe shovel, and locking the shovel prior to the backward movementthereof.

2. An excavator including a shovel, actuating means for moving the samebackivardly, and means operated by said actuat- 1ng means forsuccessively elevating and lockingthe shovel prior to the backwardmovement thereof.

3. An excavator including a shovel, a supporting structure therefor,actuating means for moving said structure and shovel backwardly, andmeans operated by said actuating means for successively elevating thestructure and locking the shovel against upward movement relative to thestructure,

prior to the backward movement of the shovel and structure.

' 4. An excavator including a shovel, a supporting structure therefor,actuating means for moving the structure and shovel backwardly, andmeans operated by said actuating means prior to the backward move mentof the structure and shovel, for successively ejecting the contents ofthe shovel, elevating the structure, and locking the shovel againstupward movement relative to the structure.

5. An excavator including ashovel, means for locking the same in loweredposition, means operated by the pressure of material accumulated withinthe shovel for unlocking the shovel, means for pulling the shovelforwardly, said means operating to elevate the shovel when unlocked,means for moving the shovel rearwardly, and means foi` automaticallyejecting the con tents of the shovel prior to the rearward movementthereof.

6. Excavating apparatus including a motor, a shovel carrying structure,means op- -erated by the motor, when driven in one direction, forsuccessively ejecting the con# tents of the shovel, locking the shovel,and moving said shovel rearwardly, and means operated by the motor whendriven in the opposite direction, for successively moving the shovelforwardly to accumulate material therein and elevate the shovel, saidejectingA means being operable by the accumulated material on the shovelto unlock saidl shovel to permit the elevation thereof.

7. An excavator including a shovel, operating means for moving theshovel forwardly, operating means for moving`the 4shovel rearwardly, anelement movablyl mounted on the shovel, means operated by the backwardlyactuating means for shiftin said element to eject the contents of theshovel and to lock said shovel, and means operated by the forwardlyactuating means for elevating the shovel when unlocked, said element onthe shovel being operable by material accumulated within the shovel, tounlock the shovel.

8. An excavator including a wheel supported structure, a shovel movablymounted therein, a backing cable, means operated thereby forsuccessively ejecting the contents ofthe shovel, elevating thestructure, and locking the shovel against upward movement"relative tothe structure, prior to the backing of the excavator, a loading cable,and means operated thereby for sucsively pulling the excavator forwardlyand elevating the shovel when unlocked, said ejecting means beingoperable by material accumulated on the shovel to unlock the shovel.

9. An excavator including a wheel supported structure, a shovelpivotally connect ed thereto and suspended therefrom, longitudinallyslotted bars pivotally and slidably mounted within the structure, linkconnections between the bars and the shovel, an ejecting plate slidablymounted upon the shovel, a slidable connection between said plate andthe slotted bars, a backing cable, guides therefor, said cable beingconnected to the slidable connection and constituting means for shiftingsaid connection relative to the bars and for shifting the bars, andmeans carried by the wheel supported structure and cooperating with saidlinks for locking the links and the shovel against upward swingingmovement relative to the wheel supported structure.

10. An excavator including a wheel supported structure, a shovelpivotally connected thereto, a cross bar upon the structure, barspivotally and slidably connected to the structure, link connectionsbetween said/bars and the shovel, said connections being movable underthe cross bar to lock the shovel against upward movement, a loadingcable, said cable being connected to the structure, guides therefor'mounted upon the shovel, said cable exerting a constant liftingv actionupon the guides during the forward movement of the structure, and

means'upon the shovel and operable by ma? terial accumulating on theshovel, for shifting` the links from under the cross vbar to unlock theshovel,I

l1. An excavator including a wheel supported axle, a frame extendingthereacross,

lll@

bearing plates slidably engaged by the axle, In testimony that I claimthe foregoing said plates having inclined axle receiving as my own, Ihave hereto aixed my signa- 1( slots, a shovel carried by the structure,a ture in the presence of two witnesses.

backing cable a loading cable and means 5 operated by the respectivecables for shifte EDWARD D 'GALLEN' ing the axle in opposite directionsrespec- W1tnesses:

tively within the slots to raise and lower CLARENCE C. HAWKINs,

the structure relative to the axle. CLARENCE L. JAMIsoN.

